Revert "Register a new appid for dynamic box and its symbolic link to /usr/bin/WebPro...

Revert "Register a new appid for dynamic box and its symbolic link to /usr/bin/WebProcess"

This reverts commit 03dd9db6f0df82df0df091321467fceedd22199f.

Conflicts:
	src/jobs/widget_install/task_manifest_file.cpp

[Remarks]
    * If setting root_path of app manifest is enabled, a web api plugin
      using dummy root_path doesn' work well.
    * Even if wrt-installer has not set 'root_path', the web api plugin
      have been using 'root_path',
      hoping prefix of the path is /opt/usr/apps
    * In the case of preload app that has /usr/apps base path, the web api
      doesn't work well.
    * Therefore, emove code regarding root_path of app manifest,
      because there are other way to find root path of web apps.

Change-Id: Ia365aec499a5973d874114481f6be1b9b94ede93